Acer Travelmate 7720 Service Guide

Chapter 371
2.Turn the base unit over, then remove the one screw (A) on the bottom side of the unit. 
3.Carefully use a plastic screw driver to eject the optical drive tray. 
4.Pull the optical drive module out from the main unit. 
StepSize (Quantity)ColorTo r q u e
1 M2.5 x L6 (1) Black 3.0 kgf-cm
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72Chapter 3
5.Remove the two screws (K) securing the locker bracket and remove the locker bracket from the optical 
disk drive module. 
StepSize (Quantity)ColorTo r q u e
1~2 M2 x L3 (2) Black 1.6 kgf-cm
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Chapter 373
Main Unit Disassembly Process
Main Unit Disassembly Flowchart
Removing the Modem Board 
1.See “Removing the Battery Pack” on page 62.
2.See “Removing the Lower Cover” on page 64. Screw List
ScrewPart No.
A M2.5 x L6 86.00E33.736
C M2 x L4 86.9A552.4R0
D M2.5 x L5 86.00E74.335
H M2.5 x L8 86.00E34.738
J M2 x L4 86.00F24.724
MAIN UNIT
KEYBOARD
MAIN
BOARD Cx4
MAIN UNIT DISASSEMBLY
MIDDLE
COVER
LCD MODULE
Hx2 Ax 2
UPPER CASE
Ax 20
LEFT AND RIGHT
SPEAKER MODULE
Cx4
MODEM
BOARD Cx2 Cx2
CPU/VGA...

74Chapter 3
3.See “Removing the DIMM” on page 68.
4.See “Removing the WLAN Board Modules” on page 68.
5.Remove the 2 screws (C) securing the modem card. 
6.Lift partially to detach the modem board from the main board. 
NOTE: The modem cable is still attached to the modem board.
7.Disconnect the modem cable from the modem board. 
Removing the Heatsink Fan Module
1.See “Removing the Battery Pack” on page 62.
2.See “Removing the Lower Cover” on page 64.
StepSize (Quantity)ColorTo r q u e
1~2 M2 x L4 (2)...

Chapter 375
3.Disconnect the heatsink fan connector from FAN1 on the main board. 
4.Remove the two screws (C) securing the heatsink fan module.   
5.Remove the heatsink fan module from the main board. 
Removing the CPU and VGA Heatsink Module
1.See “Removing the Battery Pack” on page 62.
2.See “Removing the Lower Cover” on page 64.
StepSize (Quantity)ColorTo r q u e
1~2 M2 x L4 (2) Silver 1.6 kgf-cm
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76Chapter 3
3.Remove the nine screws (C) securing the CPU and VGA heatsink module in place.  
a.For system without the discrete graphic card, there are only 5 screws holding the heatsink. 
4.Slide out and remove the heatsink module. 
StepSize (Quantity)ColorTo r q u e
1~9 M2 x L4 (9) Silver 3.0 kgf-cm
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Chapter 377
Removing the CPU 
1.See “Removing the Battery Pack” on page 62..
2.See “Removing the Lower Cover” on page 64..
3.See “Removing the Heatsink Fan Module” on page 74.
4.See “Removing the CPU and VGA Heatsink Module” on page 75.
5.Using a flat screwdriver, turn the CPU socket latch counter-clockwise to release the CPU, then remove 
the CPU. 
NOTE: When installing the CPU, make sure to install the CPU with PIN 1 at the corner as shown. 
Removing the VGA board (for Discrete model only)
1.See...

78Chapter 3
5.Remove the two screws (D) securing the VGA board. 
6.Carefully remove the VGA board from the main board. 
Removing the Middle Cover and the Power Board
1.See “Removing the Battery Pack” on page 62.
2.Open the LCD screen all the way to facilitate the easy removal of the middle cover. 
3.To remove the Middle Cover, carefully insert the plastic flat screwdriver under the side of the middle cover 
and gently pry up the middle cover. Continue prying on the other side until you could detach the...

Chapter 379
4.Detach the cover and turn it over on the keyboard. 
5.Disconnect the Power board cable from the main board and disconnect the Power board cable. 
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80Chapter 3
6.Remove the one screw (C) securing the Power board to the middle cover, and remove the Power board 
from the middle cover.   
Removing the Keyboard
1.See “Removing the Battery Pack” on page 62..
2.See “Removing the Middle Cover and the Power Board” on page 78.
3.Release the top latches securing the keyboard in place.
StepSize (Quantity)ColorTo r q u e
1 M2 x L4 (1) Silver 1.6 kgf-cm
SG_Tangiz.book  Page 80  Tuesday, July 10, 2007  11:01 AM